The kNIGHT Grade 2 Surface Contact Potted 4-Wire 1M FLY x 8 is a wired alarm system component designed for use as a door alarm, window sensor, or door sensor. With a sleek white colour and a model number of E50, this product by Knight is perfect for enhancing your home security system. Its reliable connectivity ensures uninterrupted monitoring of your doors and windows, giving you peace of mind knowing your home is safeguarded.